A hot filling system for a liquid, with heat recovery, and a corresponding method, wherein prior to heating and filling the liquid is first preheated in a heat exchanger. A portion of the heated liquid to be filled is again cooled in a recooler and recirculated. The return line of the recooler is here connected to the supply line of the heat exchanger so as to transfer heat energy from the recooler to the heat exchanger. This reduces energy losses in comparison with known systems.